From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hannes Reinecke Subject: Re: kernel BUG at drivers/scsi/scsi_lib.c:1096! Date: Thu, 19 Nov 2015 16:35:29 +0100 Message-ID: <564DEC41.5010600@suse.de> References: <1447838334.1564.2.camel@ellerman.id.au> <1447855399.3974.24.camel@redhat.com> <1447894964.15206.0.camel@ellerman.id.au> <20151119082325.GA11419@infradead.org> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from mx2.suse.de ([195.135.220.15]:34697 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756521AbbKSPfd (ORCPT ); Thu, 19 Nov 2015 10:35:33 -0500 In-Reply-To: <20151119082325.GA11419@infradead.org> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: Christoph Hellwig , Michael Ellerman Cc: Mark Salter , "James E. J. Bottomley" , brking , linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-block@vger.kernel.org On 11/19/2015 09:23 AM, Christoph Hellwig wrote: > It's pretty much guaranteed a block layer bug, most likely in the > merge bios to request infrastucture where we don't obey the merging > limits properly. >=20 > Does either of you have a known good and first known bad kernel? Well, I have been fighting a similar issue for several months now, albeit with multipath enabled. Haven't had much progress with this, sadly. Seeing that this is our distro kernel it might or might not be related; however, as the symptoms are identical there still is a chance that this is actually a generic block-layer problem. Cheers, Hannes --=20 Dr. Hannes Reinecke zSeries & Storage hare@suse.de +49 911 74053 688 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 N=FCrnberg GF: F. Imend=F6rffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton HRB 21284 (AG N=FCrnberg) -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html